A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 5965-01-435-6644
NSN 6105-01-263-3989
NSN 5920-01-605-3232
NSN 5905-01-037-0666
NSN 6110-01-091-7827
NSN 7035-01-429-0431
NSN 6620-00-401-4988
NSN 6650-00-405-0702
NSN 6105-00-911-6611
NSN 5999-01-327-3067
NSN 5965-00-296-3016
NSN 5950-01-361-1494